Fatal error: Uncaught Error: Class "Google\Cloud\Spanner\V1\Gapic\SpannerGapicClient" not found in C:\xampp\htdocs\API\vendor\google\cloud\Spanner\src\V1\SpannerClient.php:39 Stack trace: #0 {main} thrown in C:\xampp\htdocs\API\vendor\google\cloud\Spanner\src\V1\SpannerClient.php on line 39